如何在我的 MySQL 查询中执行“%”

Question

我使用https://github.com/PyMySQL/PyMySQL 连接 MySQL。我想在 MySQL 命令中执行“like”查询。

下面是命令：

"select * from table where c1 > '2015-11-01' and c2 not like '%word%'"

我有一个表 table，其中包含 c1、c2 和 c3 列。

import pymysql.cursors
def query_my(my_query):
    connection = pymysql.connect(host='',
                             user='',
                             passwd='',
                             db='',
                             charset='utf8',
                             cursorclass=pymysql.cursors.DictCursor)
    try:
        with connection.cursor() as cursor: 
        sql = "select c3 from table where c1 > %s and c2 not like '%word%'"
        cursor.execute(sql, (my_query))
        re = cursor.fetchall()
        return re
        connection.commit()
    finally:
        connection.close() 
my_query='2015-11-01'
query_my(my_query)

它会返回这个错误：

Traceback (most recent call last):
  File "/home/y/share/htdocs/cgi/weekly_report_v2.py", line 31, in <modul
    print query_inc_group(i_start,i_stop)
  File "/home/y/share/htdocs/cgi/weekly_report_v2.py", line 18, in query_inc_group
    cursor.execute(sql, (_i_start,_i_stop))
  File "/usr/lib/python2.6/site-packages/PyMySQL-0.6.6-py2.6.egg/pymysql/cursors.py", line 143, in execute
    query = self.mogrify(query, args)
  File "/usr/lib/python2.6/site-packages/PyMySQL-0.6.6-py2.6.egg/pymysql/cursors.py", line 134, in mogrify
    query = query % self._escape_args(args, conn)
TypeError: not enough arguments for format string

我认为问题出在not like '%word%'。我该如何解决这种错误？我直接打印了SQL，结果看起来不错。

Answer 1

放两个 % 来逃避它。

"select c3 from table where c1 > %s and c2 not like '%%word%%'"